The Coverstar Central A4801 is an Eclipse Left Bulk Mechanism. Your backyard pool is a great place to relax, have fun and enjoy the company of friends and family; a place to create memories that will last a lifetime. With Coverstar’s ECLIPSE, your pool will be clean, warm, and ready to enjoy in less than a minute. The good times will be ready to happen with a push of a button. Coverstar has engineered the ECLIPSE pool cover system to fit your needs providing precise mechanical engineering, attention to safety, durability, creativity, and savings. Based on more than 35 years of field experience, the ECLIPSE is the preferred choice of pool owners everywhere.